Fig 8 - uploaded by Ashok Kumar Srinivasan
Content may be subject to copyright.
Directivity vs. Frequency

Directivity vs. Frequency

Source publication
Conference Paper
Full-text available
In this paper, a compact, high efficient CPW (co-planar waveguide) fed antenna which is used for various applications is proposed. In this work, the proposed antenna is evaluated using IE3D simulation software. The proposed antenna has the compact size of 16.55mm × 20.05mm × 1.6 mm and the substrate is RT_Duroid 5880 used (e r is 2.2 and tanδ is 0....

Citations

Chapter
A Microstrip polygon shaped patch antenna is proposed in this work for Internet of Things (IoT) application. The antenna has multiband response at 2.39 GHz, 4.39 GHz, 5.8 GHz and 6.56 GHz with bandwidth of 230 MHz, 380 MHz, 390 MHz and 350 MHz respectively. The partial ground structure is developed for bandwidth enhancement of the proposed model. The FR4 material is selected as the substrate of the antenna. The antenna operates over the frequency ranges of Bluetooth and WiFi as well as RF Devices and Radio Location applications.
Chapter
Since its dawn modern science has been trying to minimize the workload of humans, and one weapon to do so is robot. Moreover, Android is the most popular operating system there is these days - it is easy to apply and comprehend. Thus, we are proposing a model to control a machine with an android system remote controller. Essentially our goal is to control all the machines with remote controller and for that we will use android. Therefore, we are going to propose a model and its implementation by hardware design of a prototype how to control a machine by android system remote controller.
Chapter
A Spider shaped microstrip patch antenna has been designed for IoT application. The evolution of the spider shape from a hexagonal structure microstrip patch antenna is analyzed here. The Defected Ground Structure (DGS) is introduced to enhance the bandwidth of the antenna. The simulated impedance bandwidth is found to be 280 MHz at every resonant band. The proposed multiband antenna has the resonant frequencies at 1.48 GHz, 2.5 GHz and 3.72 GHz with S11 = −31.14 dB, −11.7 dB, −16.1 dB respectively which found in the working ranges of GPS, Bluetooth and WiFi hence enables the IoT application.
Chapter
An Elliptical CSRR patch antenna has been proposed. Analysis for this antenna has been carried out in each stage of the antenna design. The U-Shaped patch along with two circular rings on the patch resulted in Quad-Band resonance. The analysis result proved that replacing the two elliptical rings by a single ring elliptical CSRR in ground plane resulted in a multiband resonance at 1.4 GHz, 3.2 GHz, 3.9 GHz, 5 GHz, 7.1 GHz, 8.6 GHz, 11.1 GHz, 12.9 GHz, 14.7 GHz which are used as an application for WiMax, WLAN, RFID, earth exploration satellites, microwave communication and space research.